27986143023 has 12 divisors (see below), whose sum is σ = 40540930248. Its totient is φ = 18603658800.

The previous prime is 27986143007. The next prime is 27986143033. The reversal of 27986143023 is 32034168972.

27986143023 is a `hidden beast` number, since 2 + 7 + 9 + 8 + 614 + 3 + 0 + 23 = 666.

It is not a de Polignac number, because 27986143023 - 2⁴ = 27986143007 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 27986143023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27986143033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4477528 + ... + 4483773.

It is an arithmetic number, because the mean of its divisors is an integer number (3378410854).

Almost surely, 2^27986143023 is an apocalyptic number.

27986143023 is a deficient number, since it is larger than the sum of its proper divisors (12554787225).

27986143023 is a wasteful number, since it uses less digits than its factorization.

27986143023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8961654 (or 8961651 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The spelling of 27986143023 in words is "twenty-seven billion, nine hundred eighty-six million, one hundred forty-three thousand, twenty-three".